Which is Not a cause for hypervolemia?

Choice A reason: An enlarged pancreas is not a characteristic of type 1 diabetes. In type 1 diabetes, the immune system attacks and destroys the insulin-producing beta cells in the pancreas, leading to a decrease in insulin production. This does not cause the pancreas to become enlarged.

Choice B reason: Hyperglycemia and hyper ketonuria are characteristic findings in type 1 diabetes. Hyperglycemia, or high blood sugar, occurs due to the lack of insulin. Hyper ketonuria, or high levels of ketones in the urine, occurs because the body breaks down fats for energy in the absence of insulin, leading to the production of ketones.

Choice C reason: A combination of environmental and genetic factors is considered to be the cause of type 1 diabetes. Genetic predisposition and environmental triggers such as viral infections can lead to the development of the disease.

Choice D reason: Type 1 diabetes most commonly occurs in children and adolescents, with a peak occurrence between the ages of 7 and 15 years. This age range is when the majority of cases are diagnosed.

Choice A reason: A catheter is a flexible tube inserted into the body to allow the passage of fluids or other substances. While catheters can be used for hemodialysis, they are typically considered temporary access points and are not created by surgically attaching an artery to a vein.

Choice B reason: A peripheral intravenous line (PIV) is a catheter placed into a small peripheral vein. PIVs are commonly used for short-term access to administer medications or fluids but are not suitable for the high flow rates needed for hemodialysis and are not surgically created by joining an artery and a vein.

Choice C reason: An arteriovenous graft (AVG) involves using a synthetic tube to connect an artery and a vein. AVGs are used for patients who cannot have an AVF due to small or weak veins. While AVGs are a viable option for hemodialysis, they are not the preferred method due to higher rates of complications like infections and clotting compared to AVFs.

Choice D reason: An arteriovenous fistula (AVF) is the preferred method of vascular access for long-term hemodialysis. It is created by surgically connecting an artery to a vein, usually in the arm. This connection allows for increased blood flow through the vein, which enlarges and strengthens it, making it suitable for repeated needle insertions during dialysis sessions. AVFs are preferred because they have lower rates of complications and provide better long-term access compared to other methods.